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Vecku1
@Vecku1
November 2021
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вычислить: sin15cos75
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dariadomnina20
Sin30=2sin15*cos15
cos30=cos^2(15)-sin^2(15)
sin30=1/2
cos30=Корень из3 делить на 2
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Answers & Comments
cos30=cos^2(15)-sin^2(15)
sin30=1/2
cos30=Корень из3 делить на 2